TECHNICAL DATA CORDLESS ANGLE DRILL DN 12DY SERVICE …

POWER TOOLS

TECHNICAL DATAAND

SERVICE MANUAL

CORDLESS ANGLE DRILLDN 12DY

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT

LIST No. F883 Mar. 2003

D

MODEL

DN 12DY

REMARK:

Throughout this TECHNICAL DATA AND SERVICE MANUAL, a symbol(s)

is(are) used in the place of company name(s) and model name(s) of our

competitor(s). The symbol(s) utilized here is(are) as follows:

Symbols UtilizedCompetitors

Company Name Model Name

C MAKITA DA312DW

P DEWALT DW965K

Page

CONTENTS

1. PRODUCT NAME ............................................................................................................................. 1

2. MARKETING OBJECTIVE ............................................................................................................... 1

3. APPLICATIONS ................................................................................................................................ 1

4. SELLING POINTS ............................................................................................................................ 1

4-1. Selling Point Descriptions ..................................................................................................................2

5. SPECIFICATIONS ............................................................................................................................ 4

6. COMPARISONS WITH SIMILAR PRODUCTS ................................................................................ 6

7. WORKING PERFORMANCE PER SINGLE CHARGE .................................................................... 7

8. PRECAUTIONS IN SALES PROMOTION ....................................................................................... 8

8-1. Safety Instructions .............................................................................................................................8

8-2. Inherent Drawbacks of Cordless Angle Drills Requiring Particular Attention

During Sales Promotion ...................................................................................................................10

9. REFERENCE MATERIALS .............................................................................................................11

9-1. Speed Control Mechanism .............................................................................................................. 11

10. REPAIR GUIDE ............................................................................................................................ 12

10-1. Precautions in Disassembly and Reassembly ...............................................................................12

10-2. Precautions in Disassembly and Reassembly of Battery Charger ................................................14

11. STANDARD REPAIR TIME (UNIT) SCHEDULES........................................................................ 15

Assembly Diagram for DN 12DY

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Click the subject you want. The screen turns to the corresponding page.

--- 1 ---

1. PRODUCT NAME

Hitachi 12 V Cordless Angle Drill, Model DN 12DY

2. MARKETING OBJECTIVE

The new Model DN 12DY is a 12-V version of the well-reputed Model DN 10DY. The torque and the operation

efficiency are higher than those of the Model DN 10DY. With the Model DN 12DY, we aim to enhance our share.

3. APPLICATIONS

Drilling holes in wood, mild steel, plastic and similar materials

Tightening and removing of wood screws and tapping screws

4. SELLING POINTS

95 m

m

10 mm (3/8") keyless chuck withracheting lock mechanism

12 V battery9.6-V battery is also usable.

Push-button typereversing switch

Easy-to-grip handle design

Circumference: 160 mm

Variable speed switchwith braking function

Equipped with feedbackpower control

Shorter height (95 mm) and compact designensure high operation efficiency.

--- 2 ---

4-1. Selling Point Descriptions

4-1-1. Shorter height and compact design

Table 1

Maker

Model

HITACHI

DN 12DYC

A-A circumference 160 mm B-B circumference 174 mm

C-C circumference 198 mm

Overall length x

height (mm)

Maker

ModelP

Overall length x

height (mm)

--- 3 ---

4-1-2. 10 mm (3/8") keyless chuck with ratcheting lock mechanism

This model is equipped with ratcheting lock mechanism to prevent the chuck from loosening.

Loosen

Tighten

Sleeve

Ring

4-1-3. Variable speed switch with braking function

The braking function allows the driver unit to stop rotation immediately when the trigger switch is released, which

is a convenient feature during actual working. Also, the feedback system ensures a sufficiently large torque even

in the variable speed range.

4-1-4. 9.6-V battery is also usable

The Model DN 12DY can also operate on the 9.6-V battery. However, the working performance is about 80% of

that when operating on the 12-V battery due to the lower voltage. Refer to "7. WORKING PERFORMANCE PER

SINGLE CHARGE" for working performance of the Model DN 12DY per charge.

Fig. 1

--- 4 ---

5. SPECIFICATIONS

Screwdriver Wood screw • • • • • • • • • • • • 5.1 dia. x 40 mm (#11 x 1-9/16")Drill Metal • • • • • • Mild steel 10 mm (3/8") [thickness 1.6 mm (1/16")]

Aluminum 10 mm (3/8") [thickness 1.6 mm (1/16")]Wood • • • • • • • • • • • • • • • • • • • • • • 18 mm (11/16") [thickness 18 mm (11/16")]

Mount type • • • • • • • • • Screw-on (UNF 3/8" --- 24)Diameter • • • • • • • • • • • • 1.0 --- 10 mm (1/32" --- 3/8")

0 --- 800 /min

Max. torque • • • • • • • • • • • • 9 N•m (92 kgf•cm (80 in-lbs.))

DC magnet motor

Trigger switch with push button for forward and reverse rotation changeover

Body • • • • • • • • • • • • • • • • • • • • • • Glassfiber reinforced polycarbonate resin (green)Battery • • • • • • • • • • • • • • • • • • • ABS resin (black)Charger • • • • • • • • • • • • • • • • • • ABS resin (black)

Sealed cylindrical nickel-cadmium batteryNominal voltage • • • • • • • • • • • • • • • DC 12 VNominal life • • • • • • • • • • • • • • • • • • • • • Charging/discharging: approximately 300 times

(in case of Model UC 12SD or UC 14YF2 or UC 24YFA)Nominal capacity • • • • • • • • • • • • • • 1.2 Ah

Sealed cylindrical nickel-cadmium batteryNominal voltage • • • • • • • • • • • • • • • DC 12 VNominal life • • • • • • • • • • • • • • • • • • • • • Charging/discharging: approximately 1000 times

(in case of Model UC 14YF2 or UC 24YFA)Nominal capacity • • • • • • • • • • • • • • 2.0 Ah

Sealed cylindrical nickel-metal hydride batteryNominal voltage • • • • • • • • • • • • • • • DC 12 VNominal life • • • • • • • • • • • • • • • • • • • • • Charging/discharging: approximately 500 times

(in case of Model UC 14YF2 or UC 24YFA)Nominal capacity • • • • • • • • • • • • • • 3.0 Ah

Overcharge protection system: (1) Battery voltage detection ( 2V system) (2) Battery surface temperature detection

(thermostat or thermistor) (3) 120 minutes timer

Power input: 44 W/90 W Charging time: Approx. 45/30 minutes [for type EB 1212S battery at 20˚C (68˚F)]

Approx. 60/50 minutes [for type EB 1220BL battery at 20˚C (68˚F)] Approx. 90/70 minutes [for type EB 1230HL battery at 20˚C (68˚F)]

Operable ambient temperature range: 0˚C -- 40˚C (32˚F -- 104˚F) The maximum allowable temperature of the type EB 1212S or EB 1220BL battery is 60˚C (140˚F) and the type EB 1230HL battery is 45˚C (113˚F). Indication method of battery charging function:

Capacity

Keyless chuck(10TLRJ-N)

Rotation speed (No-load)

Torque

Type of motor

Type of switch

Enclosure

Battery(Type EB 1212S)

Battery(Type EB 1220BL)

Battery(Type EB 1230HL)

Charger(Model UC 14YF2/

UC 24YFA)

--- 5 ---

Weight Net

Gross

Standard accessories

With 2 batteries (EB 1220BL or EB 1230HL) and charger (UC 14YF2), case • • • • 4.8 kg (10.6 Ibs.)

With 2 batteries (EB 1220BL or EB 1230HL) and charger (UC 24YF2), case • • • • • 4.1 kg (9.0 Ibs.)

With 1 battery (EB 1220BL or EB 1230HL) and charger (UC 14YF2), case • • • • • • • 4.1 kg (9.0 Ibs.)

With 1 battery (EB 1220BL or EB 1230HL) and charger (UC 24YFA), case • • • • • • • 3.4 kg (7.5 Ibs.)

With 2 batteries (EB 1212S) and charger (UC 12SD), case • • • • • • • • • • • • • • • • • • • • • • • • • • 4.5 kg (9.9 Ibs.)

Main body (including EB 1220BL/EB 1230HL) • • • • • • • • • • • • • • • • • • • • • • • • • • 1.4 kg (3.1 Ibs.) Main body (including EB 1212S) • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 1.3 kg (2.9 Ibs.)

Charger unit (UC 12SD) (including cord) • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 1.5 kg (3.3 Ibs.) Charger unit (UC 14YF2) (including cord) • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 1.3 kg (2.9 Ibs.) Charger unit (UC 24YFA) (including cord) • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 0.6 kg (1.3 Ibs.)

Charger (UC 12SD or UC 14YF2 or UC 24YFA) • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 1Cross-recessed head (plus) driver bit (No.2) • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 1Case • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 1

Overcharge prevention circuit: A thermostat monitors the surface temperature of the battery and, on detecting

the temperature rise which occurs on completion of charging, automatically turnsoff the unit to prevent the battery from overcharge.

Power input: 51 W Charging time: Approx. 60 minutes [for type EB 1212S battery at 20˚C (68˚F)] Indication method • • • • • • • Pilot lamp indicator of battery charging Function: On • • • • • • • • • • • • • • During charging

Off • • • • • • • • • • • • • • Charging completed

Charger(Model UC 12SD)(for type EB 1212S battery)

--- 6 ---

10 mm (3/8")

10 mm (3/8")

12 mm (15/32")

4.8 dia.(#10)

0 --- 800/min

Keyless

10 mm (3/8")

Lever

None

12 V

105 mm (4-9/64")

1.4 kg

4.9 N•m51 kgf•cm(44 in-lbs.)

Variable speed

Not indicated

Equipped

None

2.6 Ah

325 mm (12-51/64")

(3.1 lbs.)

6. COMPARISONS WITH SIMILAR PRODUCTS

Maker

Model

Max

. cap

acity

Bat

tery

Mild steel

Aluminum

Wood screw

Drilling

Rotation speed

Drill chuck

Type

Capacity

Reversing switch

Strap

Max. torque

Nominal capacity

Nominal voltage

Overall length

Weight

HITACHI

DN 12DY

10 mm (3/8")

10 mm (3/8")

18 mm (11/16")

5.1 dia. x 40(#11 x 1-9/16")

0 --- 800/min

Keyless

10 mm (3/8")

Push-button

Equipped

1.2 Ah

12 V

95 mm (3-3/4")

1.3 kg


Positive lock

Switch

Type

Feedback circuit

Variable speed

Equipped

Electric brake Equipped

Equipped

Overall heightDimensions

Wood

Screwdriving

3.0 Ah2.0 Ah

296 mm

(11-21/32")305 mm (12")

1.4 kg

(2.9 lbs.) (3.1 lbs.)

DN 10DY (9.6 V)

10 mm (3/8")

10 mm (3/8")

15 mm (19/32")

5.1 dia. x 35(#11 x 1-3/8")

0 --- 800/min

Keyless

10 mm (3/8")

Push-button

Equipped

9.6 V

97 mm (3-13/16")

1.3 kg


Variable speed

Equipped

Equipped

None

2.0 Ah

305 mm (12")

(2.9 lbs.)

C

10 mm (3/8")

10 mm (3/8")

25 mm (1")

Not indicated

0 --- 400/0 -- 1200 min

Keyless

10 mm (3/8")

Push-button

None

12 V

113 mm (4-29/64")

1.85 kg

*1 20.3 N•m207 kgf•cm(180 in-lbs.)

Variable speed

Not indicated

Equipped

None

1.3 Ah

318 mm (12-33/64")

(4.1 lbs.)

P

Remarks *1 • • • • • • • • • • • • at low speed

--- 7 ---

Test conditions Maker Model nameNo. of drilling or fastening operations per charge (*1) Working

time(sec./pc.)0 600200 400

DN 12DY(W/EB 1230HL)

HITACHI(12 V)

HITACHI(9.6 V)

C

P

DN 12DY(W/EB 1220BL)

DN 12DY(W/EB 1212S)

DN 12Y(W/EB 9B)

DN 10DY(W/EB 9B)

18

18

18

21

19

15

23

120

80

48

35

116

54

65


HITACHI(12 V)

HITACHI(9.6 V)

C

P


DN 12DY(W/EB 1212S)

DN 12Y(W/EB 9B)

DN 10DY(W/EB 9B)


HITACHI(12 V)

HITACHI(9.6 V)

C

P


DN 12DY(W/EB 1212S)

DN 12Y(W/EB 9B)

DN 10DY(W/EB 9B)

1.9

1.9

1.9

2.0

2.1

1.7

2.5

366

244

146

121

338

204

204

541

360

216

182

477

248

308

1.2

1.2

1.2

1.5

1.4

1.1

1.6

7. WORKING PERFORMANCE PER SINGLE CHARGE

Drilling and fastening performance comparison per charge

Remarks*1: Number of holes or fasteners per chargeThe above table shows an example of test data obtained using the battery which is standard for this tool.As actually measured values listed in the above table may vary depending on sharpness of drill bit, workpiecehardness (particularly in wood materials), moisture content of wood, charging condition, operator skill, etc. Thisdata should be used as a comparative guide only.

Mild steel

--- 8 ---

8. PRECAUTIONS IN SALES PROMOTION

8-1. Safety Instructions

In the interest of promoting the safest and most efficient use of the Model DN 12DY cordless angle drill by all of

our customers, it is very important that at the time of sale, the salesperson carefully ensures that the buyer

seriously recognizes the importance of the contents of the Handling Instructions, and fully understands the

meaning of the precautions listed on the Caution Plate and Name Plate attached to each tool.

A. Handling Instructions

Salespersons must be thoroughly familiar with the contents of the Handling Instructions in order to give pertinent

advice to the customer. In particular, they must have a thorough understanding of the precautions for use of the

cordless tools which are different from those of ordinary electric power tools.

(1) Before use, ensure that the unit is fully charged.

New units are not fully charged. Even if the units were fully charged at the factory, long periods of inactivity,

such as during shipping, cause the storage battery to lose its charge. Customers must be instructed to fully

charge the unit prior to use.

(2) Connect the charger to an AC power outlet only.

Use of any other power source (DC outlet, fuel powered generator, etc.) will cause the charger to overheat and

burn out.

(3) Do not use any voltage increasing equipment (transformer, etc.) between the power source and the charger.

If the charger is used with voltage higher than that indicated on the unit, it will not function properly.

(4) Conduct battery charging at an ambient temperature range of 0 ˚C --- 40 ˚C (32˚F --- 104˚F).

Special temperature sensitive devices are employed in the charger to permit rapid charging. Ensure that

customers are instructed to use the charger at the indicated ambient temperature range. At temperature

under 0˚C (32˚F) the thermostat will not function properly, and the storage battery may be overcharged. At

temperature over 40 ˚C (104 ˚F), the storage battery cannot be sufficiently charged. The optimum temperature

range is 20 ˚C --- 25 ˚C (68 ˚F --- 77 ˚F).

(5) The battery charger should not be used continuously.

At high ambient temperature, if over three storage batteries are charged in succession, the temperature of the

coils on the transformer will rise and there is a chance that the temperature fuse inserted in the interior of the

transformer will inadvertently melt. After charging one battery, please wait about 15 minutes before charging

the next battery.

(6) Do not insert foreign objects into the air vents on the charger.

The charger case is equipped with air vents to protect the internal electronic components from overheating.

Caution the customer not to allow foreign materials, such as metallic or flammable objects, to be dropped or

inserted into the air vents. This could cause electrical shock, fire, or other serious hazards.

--- 9 ---

(7) Do not attempt to disassemble the storage battery or the charger.

Special devices, such as a thermostat, are built into the storage battery and charger to permit rapid charging.

Incorrect parts replacement and/or wiring will cause malfunctions which could result in fire or other hazards.

Instruct the customer to bring these units to an authorized service center in the event repair or replacement is

necessary.

(8) Disposal of the Type EB 1212S, EB 1220BL or EB 1230HL storage battery

Ensure that all customers understand that Type EB 1212S, EB 1220BL or EB 1230HL storage battery should

be returned to the Hitachi power tool sales outlet or the authorized service center when it is no longer capable

of being recharged or repaired. If thrown into a fire, the battery may explode, or, if discarded indiscriminately,

leakage of the cadmium compound contained in the battery may cause environmental pollution.

B. Caution plates

(1) The following cautions are listed on the Name Plate attached to the main body of each tool.

For the U.S.A. and Canada


(2) The following cautions are listed on the Name Plate attached to each Type EB 1212S, EB 1220BL or

EB 1230HL storage battery.

For Europe, Asia and Oceania

(3) The following caution is listed on the Name Plate attached to the Model UC 24YFA charger.


--- 10 ---

8-2. Inherent Drawbacks of Cordless Angle Drills Requiring Particular Attention During Sales Promotion

The cordless angle drill offers many advantages; it can be used in places where no power source is available, the

absence of a cord allows easy use, etc. However, any cordless tool has certain inherent drawbacks.

Salespersons must be thoroughly familiar with these drawbacks in order to properly advise the customer in the

most efficient use of the tool.

A. Suggestions and precautions for the efficient use of the tool

(1) Use the cordless angle drill for comparatively light work.

Because they are battery driven, the output of the motor in cordless angle drills is rather low in comparison

with conventional electric power tools. Accordingly, they are not suitable for continuous drilling of many holes

in succession, or for drilling into particularly hard materials which creates a heavy load. Salespersons should

recommend conventional electric power tools for such heavy work.

(2) Do not insert a foreign object into body vent holes.

The body of this tool has vent holes for improving the cooling efficiency. As a fan is built into the motor, a

foreign object inserted through a vent hole may cause a failure. Please instruct customers to never insert a

foreign object into the vent hole.

(3) Avoid "Locking" of the motor.

Locking of the motor will cause an overload current that could result in burning of the motor and/or rapid

deterioration of the battery. Salespersons should advise the customer to immediately release the switch and

stop operation if the motor becomes locked. (A jammed drill bit can be disengaged from the workpiece

material by setting the switch to reverse rotation, or by manually turning the main body of the tool.)

(4) Variation in amount of work possible per charge

Although the nominal chargeable capacity of the storage batteries used with the Model DN 12DY is 1.2 Ah,

2.0 Ah or 3.0 Ah, the actual capacity may vary within 10% of that value depending on the ambient temperature

during use and charging, and the number of times the batteries have been recharged. It should be noted that

other factors which may have a bearing on the amount of work possible per charge are the working conditions

(ambient temperature, type and moisture content of the workpiece, sharpness of the drill bit, etc.) and the

operational skill of the user.

(5) Precautions in the use of HSS drill bits

Although the Model DN 12DY is designed for drilling capacities of 18 mm (11/16") in wood, and 10 mm (3/8")

in aluminum and mild steel, this capability is not as efficient as conventional electric power tools. In particular,

when drilling through aluminum material with a 10 mm (3/8") drill bit, the drill tends to become locked when the

drill bit penetrates through the material. For this reason, the customer should be cautioned to reduce the

thrust on the main body of the drill when drilling completely through the material to avoid locking the tool.

Repeated locking of the drill causes excessive current flow from the batteries which not only decreases the

amount of work possible per charge, but could also result in burning of the motor.

--- 11 ---

100

Rot

atio

n sp

eed

60 5

(%)

12 8

0 2 0.5 7 0.5

Amount trigger switch is depressed (mm) 9 0.5

(6) Securely tighten the sleeve of the keyless chuck.

The keyless chuck may slip during operation if the shape of the drill bit shank is cylindrical depending on the

surface conditions, materials, etc. Please instruct the customers to retighten the keyless chuck more securely

if the keyless chuck slips during operation. The holding force of the keyless chuck is increased as the

tightening force of the keyless chuck is increased. The Model DN 12DY is equipped with the locking device to

prevent loosening of the keyless chuck. The sleeve makes noise when tightening or loosening. This is

because of the locking device and there is no problem.

(7) Avoid continuous use.

Although the Model DN 12DY can bear continuous operation under certain conditions, operating conditions

are different depending on material of workpiece and sharpness of the drill bit in use. Please instruct the

customers to avoid continuous use of the Model DN 12DY and take a pause about 15 minutes after a single

charge operation as a guide.

B. Suggestions and precautions for the efficient use of the charger and storage batteries

If any of the storage batteries Types EB 1212S, EB 1220BL and EB 1230HL is exposed to direct sunlight for an

extended period or if the temperature of the battery is high immediately after it has been used in the tool, the pilot

lamp (red) may not be turned on when the battery is connected to the charger. Chargeable temperature ranges of

each type of battery are specified as follows.

Types EB 1212S and EB 1220BL: from -5˚C to 60˚C (from 23˚F to 140˚F)

Type EB 1230HL: from 0˚C to 45˚C (from 32˚F to 113˚F)

In such a case, the customer should be advised to place the battery in a shaded area with a good airflow, and

allows sufficient cooling before recharging. This phenomenon is common to all existing batteries that employ a

thermostat. The cooling time required before charging varies from a few minutes to about 30 minutes, depending

on the load, duration of use, and ambient temperature.

9. REFERENCE MATERIALS

9-1. Speed Control Mechanism

Spindle rotation speed of the Model DN 12DY can be

controlled by simply varying the amount by which the

trigger switch is depressed. The relationship between the

amount the trigger switch is depressed (in millimeters) and

the rotation speed is illustrated in Fig. 2.

Note: The gradient and values illustrated in Fig. 2 are

intended for reference only, and will vary slightly

due to differences in the discharge condition of the

battery, the ambient temperature, and individual

speed-control element accuracy.Fig. 2

--- 12 ---

10. REPAIR GUIDE

Be sure to remove the storage batteries from the main body before servicing. Inadvertent triggering of the switch

with the storage battery connected will result in a danger of accidental turning of the motor.

10-1. Precautions in Disassembly and Reassembly

The [Bold] numbers in the description below correspond to the item numbers in the Parts List and exploded

assembly diagram for the Model DN 12DY.

10-1-1. Disassembly

(1) Remove the Hook [19].

Place your fingers inside the Hook [19], and expand it outward enough so that it can be removed from the

main body.

(2) Disassembly of Housing (B):

Remove the seven Tapping Screws (W/Flange) D3 x 16 [13] which fix the main body. Then grasp the lower

portions of Housing (A) and Housing (B) where the battery is inserted, and gently separate them.

(3) Disassembly of the Motor, Switch:

When Housing (B) has been removed, the Motor [8], DC-Speed Control Switch [16] can be taken out together

in a single assembled unit. These assembled components can be disassembled as follows: With a soldering

iron, disconnect Internal Wires (A) [9] [10] of the Motor [8].

Remove the single Bind Screw M3 x 7 [5], and disassemble the Fin [6] from the FET (Field Effect Transistor)

of the DC-Speed Control Switch [16].

[Note] Do not disconnect the three FET internal wires that are soldered to the DC-Speed Control Switch [16].

(4) Removal of the Drill Chuck 10TLRJ-N:

The Drill Chuck 10TLRJ-N (W/O Chuck Wrench) [3] can be removed from the Spindle [2] as follows:

(a) Fully open the jaws of the Drill Chuck 10TLRJ-N (W/O Chuck Wrench) [3].

(b) Fit a J-217 spindle lock jig (special repair tool, Code No. 970998) onto the flat surfaces provided on the

Spindle [2], secure it in a vise, and remove the Flat Hd. Screw (Left Hand) M5 x 17 [4] by turning it

clockwise (to the right) with a straight edge screwdriver.

(c) Turn the hexagonal portion at the tip of the Drill Chuck 10TLRJ-N (W/O Chuck Wrench) [3]

counterclockwise with a 16 mm socket wrench to remove the Drill Chuck 10TLRJ-N (W/O Chuck Wrench)

[3] as shown in Fig. 3. If it is difficult to loosen, use a pipe extension or similar tool.

--- 13 ---

10-1-2. Reassembly

Reassembly can be accomplished by following the disassembly procedures in reverse. However, special

attention should be given to the following points.

(1) Ensure that the wiring of the Model DN 12DY is connected as shown in the diagram in Fig. 4.

Hexagonal portion

Spindle [2]

Special repair tool (J-217)

Vise

Flat Hd. Screw (Left Hand)M5 x 17 [4]

Drill Chuck 10TLRJ-N(W/O Chuck Wrench) [3]

16 mm socket

Socket wrench

Bind Screw M3 x 7 [5]

Fin [6]Ferrite Core [11](for Europe market)

InternWire (A) [9](Red)

Motor [8]

Positive pole

* Indicates soldering portions (4 portions)

Internal Wire (A) [10](Black)

FET

DC-Speed Control Switch [16]

Blue

Brown

Fig. 4

Fig. 3

--- 14 ---

Fig. 5

Positive terminalThis red mark indicates the positive pole.

Negative terminal

(2) When soldering Internal Wires (A) [9] (Red) and [10] (Black) onto the Motor [8], be very careful to ensure

correct motor polarity. As illustrated in Fig. 5, there is a red mark close to the terminal which indicates the

positive pole.

(3) Be very careful not to bend or otherwise damage the base portions of the leadwires of the FET which are

connected to the DC-Speed Control Switch [16].

(4) Tighten each fastening screw with the appropriate tightening torque indicated below.

Tapping Screw (W/Flange) D3 x 16 [13] • • • • • • • • • • • • • • • • 1.1 --- 1.9 N•m (11 --- 19 kgf•cm, 9.5 --- 16.5 in-lbs.)

Bind Screw M3 x 7 [5] • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 0.3 --- 0.5 N•m (3 --- 5 kgf•cm, 2.6 --- 4.3 in-lbs.)

Flat Hd. Screw (Left Hand) M5 x 17 [4] • • • • • • • • • • • • • • • • • • 2.9 --- 3.9 N•m (30 --- 40 kgf•cm, 26 --- 34.7 in-lbs.)

Drill Chuck 10TLRJ-N (W/O Chuck Wrench) [3] • • • • • • 12.7 --- 14.8 N•m (130 --- 170 kgf•cm, 112 --- 148 in-lbs.)

(5) Lubrication

Apply NPC SEP-3A (Code No. 930035) to the following.

Teeth portion of the Spindle [2]

Teeth portion of the Second Pinion [7]

Pinion of the Motor [8]

(6) Confirm that the rotation direction of the spindle conforms to the rotation direction setting of the pushing

button. When the pushing button is set to the "R" position, the spindle must turn to the right (clockwise) when

viewed from the tail end of the tool (the end opposite the drill chuck). With a 9-mm dia. test bar (special repair

tool J-222-3: Code No. 305-714 is available for supply) mounted in the drill chuck, ensure that run-out is not

more than 0.5 mm when measured at a distance of 85 mm from the end of the chuck.

10-2. Precautions in Disassembly and Reassembly of Battery Charger

Please refer to the Technical Data and Service Manual for precautions in disassembly and reassembly of the

Battery Charger UC 12SD, UC 14YF2 and UC 24YFA.

--- 15 ---

11. STANDARD REPAIR TIME (UNIT) SCHEDULES

MODEL 10 20 30 40FixedVariable

Work Flow

6050

DN 12DY

Housing(A).(B) Set

Motor

DC-SpeedControl Switch

Drill Chuck(Keyless)

Metal x 2

Spindle

Second Pinion

General Assembly

ELECTRIC TOOL PARTS LIST

LIST NO.

CORDLESS ANGLE DRILLModel DN 12DY

2003 • 3 • 25

(E1)

F883

1

2

3

71

501 501 501

502

4

58

9

13

14

16

17

18

19

20

15

1211

10

6

* ALTERNATIVE PARTS--- 2 ---

ITEMNO. CODE NO. DESCRIPTION REMARKS

NO.USED

PARTS

3 -- 03

DN 12DY

1 997-752 METAL 2

2 321-964 SPINDLE 1

3 321-870 DRILL CHUCK 10TLRJ-N (W/O CHUCK WRENCH) 1

4 992-077 FLAT HD. SCREW (LEFT HAND) M5X17 1

5 306-039 BIND SCREW M3X7 1

6 308-311 FIN 1

7 321-965 SECOND PINION 1

8 321-968 MOTOR 1

* 9 321-973 INTERNAL WIRE (A) 60L (RED) 1

* 9 308-307 INTERNAL WIRE (A) 40L (RED) 1 FOR NZL, AUS, USA, CAN

* 10 321-974 INTERNAL WIRE (A) 80L (BLACK) 1

* 10 308-308 INTERNAL WIRE (A) 65L (BLACK) 1 FOR NZL, AUS, USA, CAN

* 11 318-247 FERRITE CORE 1 FOR GBR, FRG, NOR, SWE, DEN

12 321-972 HOUSING (A).(B) SET 1

13 313-687 TAPPING SCREW (W/FLANGE) D3X16 (BLACK) 7

14 NAME PLATE 1

* 15 320-387 BATTERY EB 1220BL (W/ENGLISH N.P.) 1

* 15 320-386 BATTERY EB 1220BL (W/ENGLISH N.P.) 1 FOR USA, CAN

* 15 320-685 BATTERY EB 1220BL (W/ENGLISH N.P) 1 FOR NZL

16 321-967 DC-SPEED CONTROL SWITCH 1

17 HITACHI LABEL 1

18 306-951 PUSHING BUTTON 1

19 980-838 HOOK 1

20 306-952 STRAP (BLACK) 1

* ALTERNATIVE PARTS --- 3 ---

STANDARD ACCESSORIES

OPTIONAL ACCESSORIES


NO.USED


NO.USED

3 -- 03

DN 12DY

* 501 CHARGER (MODEL UC 14YF2) 1

* 501 CHARGER (MODEL UC 24YFA) 1

* 501 CHARGER (MODEL UC 12SD) 1

502 321-941 CASE 1

* 601 320-388 BATTERY EB 1230HL (W/ENGLISH N.P.) 1

* 601 321-652 BATTERY EB 1212S (W/ENGLISH N.P) 1 FOR USA, CAN

602 955-656 - DRIVER BIT (A) 3MMX50L 1

603 955-657 - DRIVER BIT (A) 3MMX70L 1

604 955-658 - DRIVER BIT (A) 4MMX50L 1

605 955-659 - DRIVER BIT (A) 4MMX70L 1

606 955-673 - DRIVER BIT (A) 6MMX50L 1

607 955-674 - DRIVER BIT (A) 6MMX70L 1

608 983-005 + DRIVER BIT (A) NO.2 45L 1

609 983-010 + DRIVER BIT (A) NO.3 45L 1

610 983-004 + DRIVER BIT NO.1 65L 1

611 983-006 + DRIVER BIT NO.2 65L 1

612 983-011 + DRIVER BIT NO.3 65L 1

--- 4 ---


NO.USED

3 -- 03

DN 12DY

Printed in Japan

(030325N)

Documents

TECHNICAL DATA CORDLESS ANGLE DRILL DN 12DY SERVICE …